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Dr. Mary E. Sage, MD
NPI1184702953PAC ID8820984511
- Part D claims, 2024
- 114
- Publications
- 2
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- Practice address
- 39400 Paseo Padre Pkwy, Fremont, CA 94538
- Practice phone
- Call (510) 784-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Sage's professional email, personal email and mobile number
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Dr. Mary E. Sage is a psychiatrist in Fremont, California
Dr. Sage practices at Fremont Medical Center in Fremont, California, part of Kaiser Permanente.
Dr. Sage's NPI, 1184702953, was assigned on November 1, 2006. Dr. Sage graduated from New York Medical College in 2001. Dr. Sage holds California license A81298.
NPI and contact details
- NPI
- 1184702953NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8820984511
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 784-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary E. Sage practices at Fremont Medical Center in Fremont, California
Dr. Sage's primary practice is Fremont Medical Center, at 39400 Paseo Padre Pkwy, Fremont, CA 94538 in Alameda County. The practice phone is (510) 784-4000.
- Fremont Medical Center39400 Paseo Padre Pkwy, Fremont, CA 94538 · Alameda CountyPhone(510) 784-4000
Source: Dmand AI Affiliation Data
Dr. Mary E. Sage is affiliated with 2 sites of care and 1 medical group
Dr. Sage's primary practice is Fremont Medical Center in Fremont, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Sage to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mary E. Sage's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Sage practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fremont Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mary E. Sage is one of 6,803 psychiatrists in California
Psychiatry is Dr. Sage's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Sage is board certified in addiction medicine by the American Board of Preventive Medicine. Dr. Sage is licensed in California.
Specialties and state licenses
- Psychiatry, CaliforniaPrimary
Clinical focus
Dmand AI lists schizophrenia among the conditions Dr. Sage treats.
Psychiatrists near Dr. Sage
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mary E. Sage's patients have a median age of 68
Across all payers, Dmand AI patient panel data puts Dr. Sage's median patient age at 68, with 67% women.
Dr. Sage's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Mary E. Sage wrote 114 Medicare Part D claims in 2024
In 2024, Dr. Sage wrote 114 Medicare Part D claims for 19 patients. 94% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $124 in total drug cost. In 2017, CMS named 64 claims across 5 drugs.
Part D claims, 2024114
Drugs named by CMS1
Total drug cost$124
Part D patients19
Dr. Sage's Part D claims by kind of drug, 2024
- Generic107 claims94%
- Brand-name and other7 claims6%
Dr. Sage's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2017 to 2024
- 2017
- 2024
- Claims for drugs CMS names
- 2017: 642024: 1281%
Drugs named by CMS: 1 in 2024, 5 in 2017.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Mary E. Sage takes part in Medicare
Dr. Sage accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mary E. Sage has 2 publications on record
Dmand AI links 2 papers to Dr. Sage in 2022.
Papers2
Recent publications by Dr. Sage
See who Dr. Sage researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Sage works with, so you can find a warm path to the right psychiatrists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mary E. Sage graduated from New York Medical College
Dr. Sage graduated from New York Medical College in 2001.
- Medical school
- Board certified in addiction medicine
- Board certified in brain injury medicine
- Board certified in psychiatry
- Board certified in psychosomatic medicine
Source: Dmand AI Professional Profile Data
Dr. Mary E. Sage accepts plans from 2 insurance carriers
Dr. Sage is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Sage accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary E. Sage's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mary E. Sage
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Mary E. Sage's NPI number?
Dr. Mary E. Sage's NPI number is 1184702953. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary E. Sage?
Dr. Mary E. Sage is a psychiatrist in Fremont, California. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Mary E. Sage practice?
Dr. Sage practices at 39400 Paseo Padre Pkwy, Fremont, CA 94538. Dr. Sage's primary practice is Fremont Medical Center in Fremont, California, part of Kaiser Permanente. Dmand AI also links Dr. Sage to 1 group practice or clinic.
What is Dr. Mary E. Sage's office phone number?
The practice phone on file for Dr. Sage is (510) 784-4000.
What is Dr. Mary E. Sage's medical license number?
Dr. Sage holds California license A81298.
Which hospitals is Dr. Mary E. Sage affiliated with?
Dr. Sage practices at Fremont Medical Center in Fremont, California.
What medical group is Dr. Mary E. Sage part of?
Dr. Sage is linked to The Permanente Medical Group, Inc.
Does Dr. Mary E. Sage accept Medicare?
Yes. CMS lists Dr. Sage as accepting Medicare assignment.
Is Dr. Mary E. Sage board certified?
Yes. Dr. Sage is board certified in addiction medicine by the American Board of Preventive Medicine.
Where did Dr. Mary E. Sage go to medical school?
Dr. Sage graduated from New York Medical College in 2001.
Show 4 more questionsShow fewer questions
What drugs does Dr. Mary E. Sage prescribe most?
In 2024 Medicare Part D data, Dr. Sage's most prescribed drugs by claims were Lorazepam.
How long has Dr. Mary E. Sage been practicing?
Dr. Sage graduated from medical school in 2001, 25 years ago.
Does Dr. Mary E. Sage do research?
Dmand AI links 2 publications to Dr. Sage.
What insurance does Dr. Mary E. Sage accept?
Dr. Sage is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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